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BSD- PBL Membrane Pore Size Analyzer Liquid-Liquid

The PB Membrane Pore Size Analyzer utilizes the gas-liquid or liquid liquid displacement method (bubble pressure method) to accurately measure the pore size characteristics of membrane materials. By applying a pressure difference across the membrane, the system overcomes the surface tension of the infiltration liquid, driving it through the pores to determine pore throat sizes. This method is the standard for ASTM thin film pore size testing. The analyzer is widely used for pore size analysis in materials such as filter membranes, fiber membranes, filter elements, battery separators, fabrics, non-woven fabrics, paper, ceramics, sintered metals, rocks, concrete, and more.

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Main Function
  • High-throughput and Fast Specific Surface Area Analysis;
  • Pore Volume and Meso-, Micro-, Ultra Micro-pore Size
    Distribution Analysis;
  • Gas Adsorption Isotherm (E.g. Nz, O₂, Ar, CO, CO₂)
  • Combustible Gas Adsorption Isotherm (E.g. H₂, CH₄, C2H6).
Technical Parameter
  • Test Range: > 0.0005m²/g for specific surface area: 0.35nm –
    500nm for pore size;
  • High Accuracy: < 0.5% RSD (BET value of standard Sample as reference);
  • Pressure Transducer: Transducers are equipped for each analytic station. PO station and calibrated volume respectively, which work independently with precision at 0.15%;
  • Vaccum System: 10^-2 Pa with mechanical pump: 10^-8 Pa with molecular pump.
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Key Feature

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5 nm to 50 nm and 0.012 µm to 500 µm

Precise pore size measurement using both gas-liquid and liquid-liquid displacement method.

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Dual Pressure Sensors

Segmented pressure measurement with complementary ranges for enhanced accuracy.

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Dual Flow Sensors

Segmented flow measurement with automatic program switching for optimal performance.

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Vacuum-Assisted Wetting

Fast, efficient sample infiltration that improves wetting efficiency and simplifies operation.

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Versatile Sample Pool

Adapts to various membrane sizes and types for flexible testing.

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Bubble Pressure Method

Through-Hole Aperture:** ASTM-compliant method for measuring film pore sizes.